若(x+3)(x+a)=x^2-2x-15

若A={x|(1/2)^(x+2)(x-3)>1}B={x|(3a-x)/(x-a) x^2-6x+5= A(x-2)(x-3)B(x-6)(x+1) a+x/x+1 ,x/x^2-2x-3 ,a/x^2+4x+3 若a^2x=√2 -1,则(a^3x+a^-3x)/(a^x+a^-x)等于? *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x (X+1)X(X+2)X(X+3)=504 若f(x)={a'x(x>1),(4-a/2)x+2(x 七年级下册政治复习提纲(山东人民出版社)第五单元是 青春的脚步 青春的气息别弄错了啊!格式：X X X X X X X X X 1、X X X X X X X X X X.2、X X X X X X X X X.3、X X X X X X X X X X X. 一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X 若多项式2x*x*x*x-3x*x*x+ax*x+7x+b能被x*x+x-2整除,求a:b {ln(x^2+a^2),若x>1 f(x)={sinb(x-1),若x 几道课外数学题(x^2+4x+8)^2+3x(x^2+4x+8)+2x^2(x^2+x+1)(x^2+x+2)-12(x-3)(x-1)(x+2)(x+4)+24若9x^2-30x+A^2是一个完全平方,则A=_____abx^2-(ac-b^2)x-bc=(ax______)(bx_______) 若3x+7/（x-1)(x-2)=A/x-1+B/x-2 则A= B= 若U=R,A={x|(1/2)^(x+2)(x -3)>1},B={x|log3(x-a) 若U=R,A={x|(1/2)^(x+ 2)(x- 3)>1},B={x|log3(x-a) 若U=R,A={x|(1/2)^(x+2)(x -3)>1},B={x|log3(x-a) 若U=R,A={x|(1/2)^(x 2)(x 3)>1},B={x|log3(x-a)